Sewing-machine drive.



S. DESURE.

SEWING MACHINE DRIVE.

APPLICATION F|LED Aus. x1. |915.

Lgl, Patented Feb.25,1919.

3 SHEETS-SHEET 1.

A TTHNEY S. DESURE.

SEWING MACHINE DRIVE.

APPLICATION FILED Auen. I9Ie.

1,295,131 Patented Feb. 25, 1919.

t 3 SHEETS-'SHEET 2. fige@ A TTUHNE Y s. DESURYE.

SEWING MACHINE DRIVE.

APPLICATION FILED'AUG. I7. |916.

1,295,131 Patented Feb. 25, 19I9.

3 SHEETS-SHEET 3.

r time SAMUEL DESURE, OF NEW YORK, N. Y., ASSIGNOR TO D & D ELECTRIC COMPANY, A CORPORATION OF NEW YORK.

To all whom t may concern: y

Be it known that I, SAMUEL DEsURE, a citizen of the United States, and resident of New York city, in the borough of Manhattan, city, county, and State of New York, have invented certain new and useful Improvements in Sewing-Machine Drives, of which the following is a specification.

The present invention relates to improvements in a drive or power table for sewing machines. The invention consists, principally in an improved power shaft and leg construction, an Object of the same being to dispense with the necessity of belts, driving pulleys, etc., and enable the power shafts to be situated in such manner as not to be eX- posed and dangerous. Another object is to provide such a table which will be economical, consuming a relatively small amount of power, and will allowgreater freedom of movement to theoperatives. To this end I propose to provide means for transmitting power from a continuously rotating driving member to a number of intermittently driven members, the latter operating in a similar manner, the working machines, whereby the `working machines and their respective operating members are arranged in sets of two, driven from a common driving member, and all moving parts located under the power table are so efliciently inclosed or located that any danger of injury, on account of contact between the clothes of the operator, the material worked upon, and the moving mechanism is totally eliminated.

The invention further provides for arrangements for normally keeping the driven member of each working machine at rest and driving the same only when needed whereby a large amount of power is saved and the security of the operator against contact ,with moving machinery further enhanced.

The driving member, furthermore, is so located that it is vsuiiiciently removed from the ioor so as to leave an entirely unobstructed floor space and render contact between the only moving parts, when the working machines are at rest, and loose material, such as the clothes of the operator, practically impossible.

Another improvement comprises the formation of an individual trough for each set Specification of Letters Patent.

Patented Feb. 25, 1919.

Application filed August 17, 1916. Serial No. 115,391.

of machines adapted to receive the material worked upon, portions 'of this trough being employed for inclosing the driving member. A further improvement consists in a brake for the, driving member and a peculiarly formed rim on the brake member, which permits the machine to be driven at variable speeds and to be instantaneously stopped when desired. The sewing machine power tables heretofore in use required belting, pulleys, etc., and necessitated the power shaft being very near to the floor, making the moving parts very dangerous to those seated near the same, and occupying considerable Hoor space. There was much wear and tear on those power tables, and the disabling of one machine necessitated stopping of all other machines on the tables during repair. Also those tables were noisy in operating and Consumed a large amountgof power, much of which was lost while certain machines were not in use, as the construction necessitated the continual running of the individual driving pulleys of each machine irrespective of whether the machine was in use or not.

With the above and other objects in view, my invention is shown in the accompanying drawings and will be hereinafter more fully described with reference thereto and finally pointed out in the claims.

In the accompanying drawings: v

Figure l is a perspective view of my improved table,

Fig. 2 is an elevation of the table supporting means,

Fig. 3 is a side view of onerof the leg supports,

Fig. 4 is a top view of the parts shown in Fig. 2, v

Fig. 5 is a sectional view alongthe line 5-5 of Fig. 2,

Fig. 6 is an elevation of the upper part of the supporting means,

4Fig. 7 is a vertical cross section on the line 7-7 of Fi 6,

Fig. 8 is a side view, partly in section of one of the driven members and its operating parts,

Fig. 9 is a front elevation of the same, and

Fig. 10 is a top view thereof.

Similar reference characters indicate corresponding parts throughout the several iigures of the drawings.

Referring to the drawings, and' more particularly to Figs. 1 to 7 thereof, the entire power table is arranged as follows z-A support for the table top is arranged for each set of working machines, the latterlocated on opposite sides of the power table, consisting of a pair of standards or uprights 28, 29, provided at their upper ends with vertical slots 30, and at their lower ends with feet 31, adapted to rest upon, and to be secured to the Hoor. A horizontal inwardly extending bracket 32 is provided between the upper and lower ends ofthe standard, having a horizontal slot 33. The brackets of a pair of oppositely arranged standards are connected by-means of a cross piece 34, having slots 35, coinciding with the slots 33, of the brackets 32 and adapted to receive screw bolts 37 or other fastening means, for connecting the cross lpiece to the brackets, so as to form Va. rigid support for the upper structure of the table'supporting means. A bracketv guide 38, provided with vertical ribs 39 is arranged in the middle of the cross piece 34, for holding a vertically adjustable bracket 40, having a slot 41, for receiving a screw bolt 42, to rigidly secure the Vbracket to the cross piece. Claws 43 are provided at the upper end of theV bracket 40, having set screws 43 for holding the bearing 44, of the driving shaftl 45. A prime mover 45a, or other power device, imparts rotation to the driving shaft of an entire power table and, in turn, to the driving members 46, one for each set of driven members for the working machines. These driven members actuate sewing machines which are diagonally arranged with respect to their common driving member.

The upper structure of the tablepsupport, shown in detail in Figs. 6 and 7, comprises the table shelves 10, 11, and substantially parallel thereto a cross piece 12, havingy a horizontal slot 12, the cross piece connected to the outer end of the shelve by means of a strut 13. The inner ends of the shelve are downwardly continued by the inclined shelves 14, forming one side of the supports for the sides of the trough arranged in the middle of the power table. A standard 15 connects'the shelve 10 or 11 with' the corresponding'cross piece 12, and is provided with a vertical slot 26, adaptedto receive a screw bolt 15, adapted to enter the slot 30, of the standard 29 'or 28, and adjustably secure the upper struct-ure to the supportingstandard. VAn upwardly extending inclined portion 18 is connected by a cross piece 16 tothe downwardly extending incline 14, thus forming the support for the bottom of the trough and the other side of the support for the sides of the trough. The upper edge of 10, 11, 14, 16 and`18, is formed as a narrow shelve 19, 21, 'providedA with sidewardly extending lugs, 20, 22, adapted to receive suitable fastening means for securing the table top 49 and trough to the upper structure.

The horizontal portions of the shelves are connected by members 24 and disposed between the inclined portions 14 and 18 and each member is provided at its end with a bent portion 23 which, in connection with a centrally located'portion 24 of each member, serves to position and spaceV apart the two identically constructed members forming the upper structure when they are brought into interengagement with each other and providing a substantialb7 rectangular "space 25, for receiving andf guarding the 'upper portion of the ccntinuallyrotating driving wheel 46. The members are bolted together by suitable screws in the portion 24( Y and holes Ornamental members 24, such asthe let,- ters D and D, may form a side inclosure for the space 251 and additional in'closure may be provided by the protecting casing'50,A form? ing the partition between two adjacent troughs.

The cross p1eces12 carry a bracket 51 for the bearingY 52 of the driven member for each working machine. The bearing is eX- v tended into, Vand preferably made integral with an arm 52,a having at its Yend the stationary brake member 52D.'V A shaft 537is rotatably arranged inithebearing and made integral with an eccentric shaft 54, upon which is rotatablethe driven wheel 55. This latter is provided. with a grooved pulley 56, for imparting rotation to the operattlin'g shaft of the sewing machine 57, byrmeans of a belt 58. The periphery of the drivenmember is providedwith ay rubber, or other resilient rim 59,'cover'ed bypan outer, preferably leather rim 60. The provision of these twoV rims is of primeimportance, inasmuch as one supplies the necessary resiliency and the v other the necessary friction, for successfully ypermitting the proper transmission of powery from the drivingv member to the driven member and the coperation between the driven member and the stationary brake member. An operating lever 61 is secured to theshaft 54 and connected by means ofV a rod 62 to the;

treadle 63. A tension spring 64 is connected tothe lever 61 on the one side and to a suitable hookat the end 18 of the upper structure, on the other side. A stop 65vis secured to one end of the shaft 53 by means of a set screw 66, so that the movement of the shaft 'under the action of the lever 61, is limited in both directions, by the striking of the pawls 67 against the rib 68,'of'the arm 52a.

The entire supporting structure mayu be lincased in. sheet metal, or the like,so as to safeguard and' protect any moving part.

kThe drivingV shaft is continuously rotating. The'driven wheels are normally at rest.

and in. Contact with the stationary brake memben The operation of the sewing machine is broughta-bout by pressing down the treadle which results in a slight rotation ofV the eccentric shaft so as to'vb-ring in contact the driving member with the driven member, and simultaneously relea-se the brake. The release of pressure upon the treadle, disconnects the driving member from thel driven member, again applies the brake and' returns all parts to position of rest.

With my improvements, it will beY seen there is no necessity for exposed shafts,

- drivingl pulleys, etc., and the-machinery may be run with a minimum amount of power and with less wear and tear, and also the machine runs practically noiseless;

Plenty of working room is afforded for the operators, a great saving infloor space is enabled and the danger of accidents from contact with the moving parts is reduced to a negligiblev quantity.

I have illustrated preferredv Iand satisfactory forms of my invention, but it is obvious that changes may be made therein within the spirit and scope thereof, as defi-ned in the appended claims.

I claim:

l. In a sewing machine drive, a drivingI shaft, mean-s supporting said shaft, a central driving member mounted von said shaft and.

separate driven members on each side of the said driving member, in alinement therewith, means for bringing said separate driven members separately into and out of contact with said driving member, sewing mechanisms normally connected with and adapted to be separately driven by saidv driven members and arranged on diagonally opposite sides of said driving member, and a table having a central trough intermediate the driven member 'and over the driving member.

2. In a sewing machine drive, a driving shaft, means supporting said shaft and adapted to permit raising and lowering thereof, a vdriving member mounted on said shaft, and separate driven members on each side of said driving member, in alinement therewith, means for bringing said separate driven members separately into and out of' contact with said driving member, and sewing mechanisms normally connected with and adapted to be separately driven by said driven members and arranged on diagonally opposite sides of said driving member.

3. In a sewing machine drive, a vertical leg, a driving shaft supported by said leg and adapted to be raised and lowered, a driving member mounted on said shaft, and separate driven members on each side of said driving member, in alinement therewith, means for bringing said separate driven members separately into and out of contact with said driving member, and sewing mechanisms normally connected with opposite sides of said leg and of said drivmgmember. Y t

.4, In a. driving mechanism, a ytable provided with a longitudinal trough and with partitions which extend` across said trough and have recessesopen at theI bottom, working machines located on the `table at opposite sides of the trough, a drive shaft extending longitudinally under the trough and provided with driving members extending upwardly into said recessed partitions, and means for transmitting power from said driving members to said working machines. 5. In a driving mechanism, a drive shaft, a drivingmember secured to said shaft to rotate therewith, driven members arranged to rotate in the same plane as said driving member and disposed on opposite sides of said shaft, to be driven by peripheral contact with said driving member, and working machines operatively connected with said driven members and arranged on opposite sides of said plane of rotation.

6. The combination with a power table, of working machines thereon arranged one on each of opposite sides of said ta'ble, driving. means common to each two working machines, a separate power-transmitting device for each working machine, each powertransmitting device comprising driven means, the driven means of machines of the same pair being actuated by the same driving means, a coinmon support for each set of driving and driven means comprising a set of standards, carrying said driving means, a superstructure supported by said standards 'and carrying said driven means and consisting of a pair of framesof like construction, invertedly connected in spaced apart relation and providing space for receiving the upper portion of said drivingl means.

7. The combination with a power table having a table top and working machines thereon arranged rin pairs, one machine of each pair on opposite sides of said table, a trough longitudinally located along said table between the working machines of opposi-tev sides and forming part of said table edly connected in spaced apart relation and providing space for receiving thev upper portion or said driving means, said frames extending upwardly through said trough to the level of said'table top and thereby divid-k ing saidl trough into sections, one for each pair of working machines. 8. In a driving mechanism, a table provided with a central pocket open at the bottom, and with two lateral pockets, likewise open at the bottom, located at opposite sides of' said centrall pocket, Va rotary driving member projecting upwardly 'into said central Y pocket, two rotary driven members adaptedr to be actuated by said driving member and projecting` upwardly into the respective lateral pockets, and` working Vmachines located on said table at opposite sides thereof and having operative connections to receive'power from the respective driven members.

Y 9. A table structure fora driving member andv serving as a machine support, the table' proper having a'longitudinal trough; walls fory said table properV forming a pocket adapted to be entered by the' driving member into said trough.

10.' In a table structure adapted to sup! port a driving member and one driven member on each side of the driving member, and the driven members and driving member bev ing arranged coperatively in substantially the'same plane, a tabletop comprising a longitudinal central trough, and transverse walls forming 'a' pocket adapted to be entered by the driving member,said pocket forming walls projectingy into said trough, and a table proper covering said driven members, and adapted to support machines capable of being driven by said driven members, and-.facing in opposite directions to each other. l

11. In a table structure, a longitudinal driving shaft with a plurality of driving members thereon in spaced relation, plurality of pairs of driven members, one pair Jfor each driving member, said driven Copies of this patent may be obtained for said pocket forming walls'projectingV ve cents eachfby addressing Y Washington, D. C. .Y

members being arranged at opposite sides of its respective driving member, and coperatively in substantially the same plane, a

table ytop comprising a longitudinal central trough, and a plurality of transverse walls,

ing laterally from each side o iiV the"l central longitudinal trough, coveringtthe plurality offpairs'of driven members, and said table proper supporting a plurality or pairs.

:of machines, each capablevof Ybeing driven? by-oi1e or said driven' members, and eachV air beingdriven by the same driving memer. l Y f l2. In a table structure, the combination or a table top comprising a longitudinal central trough, and a plurality of transverse walls extending into saidtro-ugh and dividing said trough into individual troughs, and forming pockets, a table proper adapted to support machines at either side of the longitudinal central trough, and driving and driven members under the table top and table proper for operating the machines on the table proper. Y

1 13. Ina table structure, the combination cof a tabletop comprising a longitudinal cen- 'tral trough, and a pluralityk of transverse walls extending into said trough and dividing said trough into individual troughs, and forming pockets open at the lowerfpart thereof, a table proper adapted'to support machines at-either side of the longitudinal central trough and drivingv and driven membersl under ,the table top' and ytable proper for operating the machinesonthe table proper', said driving members extending into the open lower partl of the pockets. In testimony, that I claim the foregoing as my invention, I have signed my namein presence of two subscribing witnesses. Y Y Y Y' i v SAMUEL DESURE., vWitnesses: y 'l .if

D. Lnwis MATTERN, o Y

A. Y. LCONGAN. 

